BARNSTABLE — A West Yarmouth woman pleaded guilty Thursday to charges that she hoodwinked an elderly Centerville man out of more than $90,000 and racked up nearly $10,000 in charges on his late wife's credit card.

Lesley Ramos, 38, pleaded guilty to use of a credit card of a value more than $250, receiving a stolen credit card and larceny of more than $250 by false pretense and was sentenced to 3½ years in the Barnstable County Correctional Facility and ordered to pay $108,000 in restitution, according to court documents.

The restitution was so large it had to be broken into multiple amounts so court computers could process it, according to court documents.

The charges stem from a years-long scam Ramos orchestrated while working as a personal caretaker for the couple, according to a police report in the court file.

The fraud first came to light when the couple's grown son, who took care of their finances, went to pay his mother's credit card bill in May. He asked his father about the large number of charges — mostly to gas stations — that month and the father said he hadn't made any, according to a police report.

Around 20 of the new charges had taken place after the mother's death.

The Times does not identify the victims of crimes.

The son went back through several years of credit card statements and determined that August 2010 was when fraudulent charges first started to appear, according to the report. The more than $9,000 in illicit purchases were at places his father usually shopped, which allowed them to go unnoticed.

The family also reported that Ramos had convinced the father to lend her $25,000. This number ballooned to nearly $100,000 after the son sifted through his father's other financial accounts, according to a police report.

The loans were all in the form of personal checks and several even listed what the money was for.

The family hired Ramos in late 2009 to care for the mother, who suffered from Alzheimer's disease and required full-time assistance. They never questioned Ramos' care, but shortly after her hire she started to have money issues, according to the report.

She told the father she had sold two motorcycles for $59,000 but was having trouble getting her payment from the buyer. She said personal expenses were piling up and she wanted to hire a lawyer but needed a loan to pay him. The father thought the money would be returned quickly and lent her an undisclosed amount, according to the report.

In the next several months, Ramos produced a litany of excuses for not paying the father back. These included medical bills for a New Bedford police officer she allegedly attacked, money to settle an old debt with a drug dealer and late payments on new furniture. She even said she had a check for the motorcycle payment, but that it had blown out the window of her car, according to the report.

The money never materialized and once the son discovered what had been going on, he and his father went to the police.